Improved water seal device for solid-liquid separator

Abstract

The application relates to an improved water sealing device for a solid-liquid second separation machine, which solves the technical problems of easy wear of a sealing belt and a filter screen of an existing solid-liquid second separation machine and poor water sealing effect. The device is installed between a frame of the solid-liquid second separation machine and a blocking device, is provided with a bottom water sealing sliding block and a side water sealing pressing block, the bottom water sealing sliding block is fixed on the frame of the solid-liquid second separation machine, the bottom water sealing sliding block is provided with a filter screen contact plane and a water sealing position, the filter screen contact plane directly contacts a filter belt of the solid-liquid second separation machine, the side water sealing pressing block is installed outside the blocking device of the solid-liquid second separation machine, the bottom end of the side water sealing pressing block exceeds the bottom edge of a side plate of the blocking device and extends to the inside of the blocking device, and the side water sealing pressing block can tightly contact the water sealing position and seal water. The application can be used in the field of sewage treatment.

Description

TECHNICAL FIELD

[0001] The present application relates to a sealing device, in particular, to an improved water sealing device for a solid-liquid separator. BACKGROUND

[0002] ZL2016100596803, a sewage rapid carbon separation device, ZL2016109413776, an improved sewage treatment rapid carbon separation device, ZL201610852343X, a liquid impurity separation, concentration, dehydration and drying integrated device, the devices disclosed in the above patents all achieve the purpose of solid-liquid separation of sewage. The treatment principle is to convey sewage to the surface of a high-speed rotating filter screen, use the rotation of the filter screen to drive the forward movement of the sewage, and use the filter screen to perform solid-liquid separation operation while the sewage is moving. When conveying the sewage to the surface of the filter screen, the two sides of the filter screen need to be blocked to prevent the sewage from flowing out from the two sides of the filter screen. Therefore, a blocking device is added in the prior art. The blocking device is a cover body with an open bottom, and the bottom of the two side plates is provided with an inclined edge along the running direction of the filter screen. The edge of the bottom of the side plate is provided with a sealing device in contact with the filter screen. The filter screen forms friction with the sealing device during movement, and the sealing device is required to effectively block the sewage on the filter screen while not causing damage to the filter screen due to excessive friction between the sealing device and the filter screen. Therefore, the sealing device has high technical requirements.

[0003] ZL201920203596.3, a water sealing device for a solid-liquid separator, provides a friction type sealing device. The sealing device at least includes a flexible sealing belt along the running direction of the side plate of the blocking device. The top of the sealing belt is fixed to the side plate of the blocking device, the bottom of the sealing belt extends out of the bottom of the side plate of the blocking device, and the extended part of the sealing belt is bent inward of the blocking device and laid flat on the surface of the filter screen. The sealing device also includes an elastic pressing piece in close contact with the inner surface of the sealing belt. The elastic pressing piece is arranged along the running direction of the side plate of the blocking device, and the elastic pressing piece is bent at the same angle as the sealing belt and the side edge of the bent part of the elastic pressing piece is located above the inner surface of the sealing belt. The sealing device also includes a pressing strip along the running direction of the side plate of the blocking device. The pressing strip is fixed to the outside of the side plate of the blocking device, and the bottom end of the pressing strip extends beyond the bottom edge of the side plate of the blocking device and extends into the blocking device. However, this method has the following technical problems in actual application:

[0004] 1. The flexible sealing belt directly contacts the filter screen, causing sliding friction and serious wear of the sealing belt and the filter screen during application.

[0005] 2. The elastic pressing piece is added to the upper layer of the sealing belt, and the pressure of the elastic pressing piece cannot be stably maintained. The pressure is too large at the initial stage of operation, which aggravates the wear of the sealing belt and the filter screen. The pressure becomes smaller at the later stage, which reduces the water sealing effect of the sealing belt.

[0006] The structure causes filter screen abrasion and increases filter screen operation resistance due to sliding friction between the sealing band and the filter screen, which is not conducive to stable operation of the filter screen. SUMMARY

[0007] The present application is to solve the technical problems in the above method, and provides a water sealing device for a solid-liquid second separation machine.

[0008] Therefore, the present application provides an improved water sealing device for a solid-liquid second separation machine, which is installed between the frame of the solid-liquid second separation machine and the blocking device, characterized in that a bottom water sealing sliding block and a side water sealing pressing block are provided, the bottom water sealing sliding block is fixedly arranged on the frame of the solid-liquid second separation machine, the bottom water sealing sliding block is provided with a filter screen contact plane and a water sealing position, and the filter screen contact plane directly contacts the filter band of the solid-liquid second separation machine; the side water sealing pressing block is installed on the outside of the blocking device of the solid-liquid second separation machine, the bottom end of the side water sealing pressing block extends beyond the bottom edge of the side plate of the blocking device and extends into the inside of the blocking device, and the side water sealing pressing block can tightly contact and seal the water at the water sealing position.

[0009] Preferably, a base support plate is further arranged between the bottom water sealing sliding block and the frame of the solid-liquid second separation machine, the base support plate is an L-shaped support structure, and the base support plate is connected with the bottom water sealing sliding block and the frame of the solid-liquid second separation machine through threaded fasteners.

[0010] Preferably, the installation angle of the base support plate is parallel to the bottom edge of the side plate of the blocking device of the solid-liquid second separation machine, and the installation height of the base support plate is lower than the bottom surface of the filter band.

[0011] Preferably, the distance between the upper surface of the base support plate and the lower surface of the filter band of the solid-liquid second separation machine is equal to the thickness of the filter screen contact plane.

[0012] Preferably, the bottom part of the side water sealing pressing block extends into the inside of the blocking device of the solid-liquid second separation machine at an inclination angle of 15-30°, and the bottom part of the side water sealing pressing block adopts a sawtooth structure with the tooth edge inclined to the inside of the blocking device.

[0013] Preferably, the water sealing position structure of the bottom water sealing sliding block is in a combination form of a step and an inclined surface, the height of the step is 3-5 times the thickness of the filter screen, the setting angle of the inclined surface is parallel to the bottom part of the side water sealing pressing block, and the length of the inclined surface is greater than the length of the inclined surface of the bottom part of the side water sealing pressing block.

[0014] Preferably, the side water sealing pressing block is made of non-metal material and internally provided with a rib plate, the rib plate is a rectangular steel plate strip, and the rib plate is provided with bolt holes.

[0015] Preferably, the bottom sealing water sliding block is installed symmetrically left and right, the filter screen contact plane extends into the filter screen by 20-25mm of the filter screen contact plane length, an adjusting plane is arranged between the filter screen contact plane and the sealing water, and the adjusting plane is provided with an adjusting length of 10-15mm.

[0016] Preferably, the material of the bottom sealing water sliding block is an organic material with water lubricity, wear resistance and corrosion resistance.

[0017] Preferably, the material of the bottom sealing water sliding block is an organic material with water lubricity, wear resistance and corrosion resistance.

[0018] Compared with the prior art, the present application has the following beneficial effects:

[0019] (1) Compared with ZL201920203596.3, a sealing water device used on a solid-liquid second separation machine, the filter belt and the sealing water structure are arranged separately without contact, the filter belt runs on the surface of the ultra-high molecular weight polyethylene with water lubricity, which reduces the running resistance of the filter belt, reduces the wear degree of the filter belt, and prolongs the service life of the filter belt.

[0020] (2) The sealing water structure provided by the present application is a static sealing water, which does not contact with the running filter belt, and because there is no sliding friction, the sealing water effect is improved, and the service life of the sealing water device is prolonged, and the sealing water structure of the present application adopts a left-right symmetric inward tilting form, under the gravity of the sealing device of the solid-liquid second separation machine, the side sealing water pressure block and the bottom sealing water sliding block sealing water are tightly matched, and the sealing water effect is good.

[0021] (3) The sealing water device provided by the present application has a simple structure, is convenient to maintain and replace, and because the side sealing water pressure block is a non-metallic material and the bottom adopts a sawtooth structure, the side sealing water pressure block has an automatic compensation function for the particles and pollutants mixed on the contact surface during operation, which ensures the stability of the sealing water effect. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 is a schematic diagram of the sealing device of the solid-liquid second separation machine of the present application;

[0023] Figure 2 is a schematic diagram of the structure of the sealing water device, the sealing device and the filter screen of the present application;

[0024] Figure 3 is a schematic diagram of the structure of the side sealing water pressure block of the present application;

[0025] Figure 4 is a schematic diagram of the structure of the bottom sealing water sliding block of the present application;

[0026] Figure 5 is a schematic diagram of the structure of the embodiment of the present application.

[0027] Symbol explanation in the figure:

[0028] 1. Frame; 2. Filter screen; 3. Sealing device; 4. Side sealing water pressure block; 5. Bottom sealing water slider; 6. Base support plate; 7. Roller; 41. Rib plate; 42. Serrated structure; 51. Contact plane; 52. Sealing slope. Detailed Implementation

[0029] The specific embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] like Figure 1 As shown, the solid-liquid separator includes a frame 1, inside which is a roller 7, and a filter screen 2 is mounted on the roller 7. During operation, wastewater is transported to the surface of the filter screen 2, and the rotation of the roller 7 drives the filter screen 2 to rotate. During operation, solid-liquid separation is achieved through filtration by the filter screen 2.

[0031] To prevent sewage from flowing out from both sides of the filter screen 2, a sealing device 3 is added. The sealing device 3 is located above the filter screen 2 and is a three-sided enclosure with an open bottom. Sewage is located inside the sealing device, and its side plates seal the sewage. In this embodiment, the sealing device 3 adopts a liftable structure. The bottom of the side plate of the sealing device 3 is provided with a side sealing water pressure block 4. When the sealing device 3 is lowered, the side sealing water pressure block 4 at the bottom of its side plate contacts the bottom sealing water slider 5 installed at the bottom, and the side sealing water pressure block 4 and the bottom sealing water slider 5 are used to seal the sewage inside the sealing device. Of course, if the sealing device 3 is fixedly installed, the water sealing device will also perform the same function.

[0032] The structure of the water-sealing device, the plugging device 3, and the filter screen 2 provided in this embodiment is shown in the figure. Figures 2-5As shown, the base support plate 6 is symmetrically fixed and installed in the inside of the frame 1 by bolts; the bottom water sealing sliding block 5 is symmetrically installed on the upper surface of the base support plate 6 according to the width of the filter screen 2 and is fixed by a countersunk screw, the base support plate 6 is an L-shaped support structure, is fixed with the frame 1 by bolts, the installation angle of the base support plate is parallel to the bottom edge of the side plate of the sealing device, and the installation height is lower than the bottom surface of the filter screen 2; the installation height of the base support plate 6 is that the distance between the upper surface of the base support plate and the lower surface of the filter screen 2 of the solid-liquid separation machine is equal to the thickness of the contact position of the bottom water sealing sliding block 5 and the filter screen 2, this structure makes the sealing device 3 and the filter screen 2 connected to form a water sealing structure through the bottom water sealing sliding block 5, the sealing device 3 does not contact the filter screen 2 when being pressed down, does not increase the operation load of the filter screen 2, and does not produce friction due to no contact, improves the service life of the filter screen 2, and reduces the friction resistance. The filter screen 2 is annularly sleeved on the support frame formed by the roller 7 and the contact plane 51; the side water sealing pressing block 4 is arranged along the side plate of the sealing device 3, the upper edge of the side water sealing pressing block 4 is attached to the outer surface of the side plate of the sealing device 3 and is fixed by bolts; the sawtooth structure 42 of the side water sealing pressing block 4 extends out of the bottom edge of the side plate of the sealing device 3 and extends into the sealing device 3, when the sealing device 3 falls and approaches the bottom water sealing sliding block 5, the sawtooth structure 42 is tightly fitted with the sealing inclined surface 52 of the bottom water sealing sliding block 5.

[0033] The bottom water sealing sliding block 5 needs to have good water lubricity and wear resistance, cannot cause wear to the filter screen 2 and should not be easily worn, can limit the filter screen 2 during operation of the filter screen 2, is resistant to sewage erosion, and can seal water for the sealing device 3. Based on the above requirements, a bottom water sealing sliding block structure is provided in the embodiment. As shown in Figure 4As shown, the bottom sealing water sliding block 5 is made of ultra-high molecular weight polyethylene or modified nylon PA66 material, which has the characteristics of wear resistance, acid and alkali resistance, and water lubrication. The surface finish of the contact plane 51 is ensured by mechanical processing to reduce wear on the filter screen 2. At the same time, a step and slope combination structure is provided at the end of the contact plane, which corrects the deviation of the filter screen 2 during operation through the steps on both sides, ensures the continuous operation of the filter screen 2 within the range of the steps, improves the stability of the filter screen operation, and the height of the step is set to 3-5 times the thickness of the filter screen 2. When the step height is less than 3 times the thickness of the filter screen 2, the filter screen 2 is easily separated from the step during operation and is coupled to the slope, the filter screen 2 deviates from the center and cannot be positioned, causing damage to the filter screen 2; when the step height is greater than 5 times the thickness of the filter screen 2, it will increase the contact area between the bottom sealing water sliding block 5 and the sewage in the sealing device 3, and the lateral water pressure on the bottom sealing water sliding block 5 will increase, which is not conducive to the stability of the installation, and the overall thickness of the bottom sealing water sliding block 5 increases, increasing the material cost. Moreover, the overall thickness of the bottom sealing water sliding block 5 increases, which causes the sealing device 3 to be lifted too high, increasing the gap between the sealing device 3 and the bottom sealing water sliding block 5 at the joint angle, and the sewage easily leaks out. At the same time, the sealing slope 52 is processed as an inwardly inclined structure with an inclination angle of 15-30°, and the slope is parallel to the bottom of the side sealing water pressure block 4. The length of the slope is greater than the length of the slope at the bottom of the side sealing water pressure block. Since the slope is parallel to the bottom of the side sealing water pressure block 4, the bottom of the side sealing water pressure block 4 is a sawtooth structure 42. When the inclination angle is less than 15°, the inward inclination angle of the sawtooth structure 42 increases, and when the sawtooth structure 42 is tightly sealed with the sealing slope 52, the tooth shape of the sawtooth structure 42 is stacked, the tooth gap increases, and multiple water sealing effects cannot be achieved, and the sealing effect is greatly reduced. When the inclination angle is greater than 30°, the inward inclination angle of the sawtooth structure 42 decreases, and when the sawtooth structure 42 is tightly sealed with the sealing slope 52, the tooth shape of the sawtooth structure 42 is easily curled, the tooth shape is disordered, and the sealing effect is not good.

[0034] When the bottom sealing water sliding block 5 is symmetrically installed, the two sealing slopes 52 and the two sawtooth structures 42 form a double V-shaped wedge structure. This structure makes the sealing slope 52 and the sawtooth structure 42 tightly fit under the gravity of the sealing device 3, greatly improving the sealing effect. The contact plane of the bottom sealing water sliding block 5 extends into the filter screen by 20-25 mm. This overlap length ensures that the contact surface between the filter screen 2 and the bottom sealing water sliding block 5 will not allow a large amount of water to pass through, while not reducing the effective filtering area of the filter screen 2. The bottom sealing water sliding block 5 is provided with an adjustment plane between the width edge of the filter screen 2 and the step at the bottom of the sealing slope 52 of the bottom sealing water sliding block 5. The adjustment plane has an adjustment length of 10-15 mm, which is convenient for deviation correction during the operation of the filter screen 2. The adjustment range will not cause extrusion to the filter screen 2. At the same time, the overlap length of the filter screen 2 and the bottom sealing water sliding block 5 is greater than the adjustment length, so that the overlap area of the filter screen 2 and the bottom sealing water sliding block 5 is greater than the adjustment area, ensuring that the filter screen 2 will not fall off the contact surface of the bottom sealing water sliding block 5.

[0035] Because the sewage on the filter screen 2 is in motion, the sewage has extrusion force to the outside of the blocking device 3, under the action of the above force, the blocking device 3 and the side sealing water pressure block 4 are easy to deform. Based on the above situation, as shown in Figure 5 Because the side sealing water pressure block 4 is a non-metallic elastic material, such as rubber, polyurethane, PVC, etc., therefore, the rib plate 41 is embedded in the side sealing water pressure block 4, the rib plate 41 is a rectangular steel strip with a certain thickness and length, the rib plate 41 is provided with bolt holes, and is connected and fixed with the blocking device 3 through bolts, the rib plate 41 is used to strengthen the side sealing water pressure block 4 and the blocking device 3 to resist the extrusion force of the sewage to the outside; and the sawtooth structure 42 is adopted at the bottom of the side sealing water pressure block 4, the angle of the inward inclination of the sawtooth structure 42 is consistent with the angle of the sealing slope 52, and the two side sealing water pressure blocks 4 are symmetrically installed, the two sawtooth structures 42 form a V-shaped wedge opening with the same angle as the sealing slope 52; when the blocking device 3 drives the side sealing water pressure block 4 to fall, the sealing slope and the sawtooth structure form a contractile sealing, and the water sealing effect is achieved; at the same time, because the side sealing pressure block 4 forms a V-shaped wedge opening inside, and the bottom sealing water sliding block 5 forms a V-shaped wedge opening outside, this form strengthens the ability of the blocking device 3 to resist the extrusion of the sewage to the outside.

Claims

1. An improved water seal device for a solid-liquid separator, which is installed between the frame of the solid-liquid separator and the blocking device, characterized in that, The bottom sealing water sliding block is fixed on the solid-liquid second separator frame, and is provided with a filter screen contact plane and a sealing water position.

2. The improved water seal device for use in a solid-liquid separator as defined in claim 1, wherein The bottom sealing water sliding block and the solid-liquid second separator frame are further provided with a base support plate, which is an L-shaped support structure and is connected with the bottom sealing water sliding block and the solid-liquid second separator frame through threaded fasteners.

3. The improved water seal device for use in a solid-liquid separator as defined in claim 2, wherein The installation angle of the base support plate is parallel to the bottom edge of the side plate of the solid-liquid second separator blocking device, and the installation height of the base support plate is lower than the bottom surface of the filter belt.

4. The improved water seal device for use in a solid-liquid separator as defined in claim 3, wherein The distance between the upper surface of the base support plate and the lower surface of the filter belt of the solid-liquid second separator is equal to the thickness of the filter screen contact plane.

5. The improved water seal device for use in a solid-liquid separator as defined in claim 1, wherein The bottom of the side sealing water pressing block is inclined to extend to the inside of the solid-liquid second separator blocking device, and the inclination angle is 15-30°.

6. The improved water seal device for use in a solid-liquid separator as defined in claim 5, wherein The height of the step is 3-5 times the thickness of the filter screen, the angle of the inclined surface is parallel to the bottom of the side sealing water pressing block, and the length of the inclined surface is greater than the length of the inclined surface of the bottom of the side sealing water pressing block.

7. The improved water seal device for use in a solid-liquid separator as defined in claim 1, wherein The side sealing water pressing block is made of non-metallic material, and is provided with a rib plate inside.

8. The improved water seal device for use in a solid-liquid separator as defined in claim 1, wherein The bottom sealing water sliding block is symmetrically installed, the filter screen contact plane extends into the filter screen by 20-25mm, the filter screen contact plane and the sealing water position are provided with an adjusting plane, and the adjusting plane is provided with an adjusting length of 10-15mm.

9. The improved water seal device for use in a solid-liquid separator as defined in claim 1, wherein The material of the bottom sealing water sliding block is an organic material with wear resistance, corrosion resistance and water lubricity.

10. The improved water seal device for use in a solid-liquid separator as defined in claim 1, wherein The material of the bottom sealing water sliding block is ultra-high molecular weight polyethylene or modified nylon PA66.

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